package hardware

import (
	"encoding/binary"

	snap7 "github.com/danclive/snap7-go"
)

type Siemens struct {
	client snap7.Snap7Client
}

func NewSiemens(client snap7.Snap7Client) Siemens {
	return Siemens{client: client}
}

func (s Siemens) Read() (uint16, error) {
	db, err := s.client.DBRead(1, 0, 8)
	if err != nil {
		return 0, err
	}

	value := binary.BigEndian.Uint16(db[2:4])

	return value, nil
}